S-100WG5, Taunton, UK 3 – 6 March 2020

5th S-100 Working Group (S-100WG) Meeting

KHOA S-100 testbed project

Republic of Korea (KHOA)

S-100WG5, Taunton, UK 3 – 6 March 2020

1. General Information

2. Executive summary

3. Testbed

3.1 Information

3.2 Methodology

3.3 Results

4. Conclusions and Recommendations

Table of contents

S-100WG5, Taunton, UK 3 – 6 March 2020

1. General Information

• Name of testbed: KHOA S-100 Testbed Project

• Location of testbed: Busan, ROK

• Time and duration of testbed: Ongoing S-100 testbed project

• Contact person(s): Yong Baek, ybaek@korea.kr (Project Manager)

• Testbed website: N/A

• Organization(s) involved: KHOA (Korea Hydrographic and Oceanographic Agency)

• Funding program and budget: KHOA

• Last Edited/Updated: January 30, 2019

S-100WG5, Taunton, UK 3 – 6 March 2020

2. Executive summary

• In relation to the decision to use the Lua-based Portrayal Catalogue, the S-100 TestBed Project of the KHOA updated their tool applying the Lua-based Portrayal Process to the KHOA S-100 Viewer.

• NIWC provided the Lua Scripting Reference for support of SW based on C++ and described the results applied to KHOA S-100 Viewer.

S-100WG5, Taunton, UK 3 – 6 March 2020

3.1 Testbed Information

• The type of user group(s) involved in the test• The relevant user groups of the KHOA S-100 Testbed will be S-100WG

members, TSM members, S-100 standard infrastructure development associates, and S-100 product standards development members.

• Details of the S-100 testbed solutions• Through a test, it tests S-100 standard infrastructure such as S-100 registry,

FCB, PCB, and validates that S-100 TDS production tools, validation tools, and packaging tool scan be enabled.

• In addition, data formats such as 8211, GML, BAG, and HDF-5 are used in the S-100 standard, so S-100 Testbed can test S-100 TDS using that data format.

S-100WG5, Taunton, UK 3 – 6 March 2020

3.2 Testbed Methodology

• Methodology used for data collection• The following data is prepared for the application of Portrayal Catalogue

based on Lua to KHOA S-100 Viewer:• S-101 ENC Test data, S-101 FC/PC, Lua Scripting Reference

• Summary information on testbed respondents / participants• None

• Procedure used in the testbed• Technical solutions used

• None

• Standards• S-100 Universal Hydrographic Data Model, ver. 3.0.0

• S-101 ENC Electronic Navigational Chart (ENC)

S-100WG5, Taunton, UK 3 – 6 March 2020

3.3 Testbed Results

• Procedure for applying Lua Scripting Reference• To apply the Lua Scripting Reference to the KHOA S-100 Viewer, the KHOA

team carried out the following activities:• LuaScriptingReference C++ code analysis

• LuaScriptingReference INPUT XML/Drawing Instrumentation (LUA) data analysis

• Updated an input XML for an KHOA S-100 Viewer that matches the input XML of the LuascriptingReference

• Handling the Drawing Instrument (LUA) in the KHOA S-100 Viewer

• Validated the KHOA S-100 Viewer application results

• To improve performance, replaced InputXML information in LuaScriptingReference with SENC

• To improve performance, replaced FC on LuaScriptingReference with system FC

• Validated the KHOA S-100 Viewer final results

• Lua Scripting Reference has a structure to derive the Drawing Instrumentation by referring to Lua Rule files when input XML and Feature Catalogue are entered in the Reference Code.

S-100WG5, Taunton, UK 3 – 6 March 2020

3.3 Testbed Results

• In accordance with the Lua Scripting Reference structure of Fig. 1, the KHOA team designed a procedure that applies LSR in two stages:

• Phase 1 • Create Input XML according to LSR's instructions

for use

• Enterthe created input XML and Feature Catalogue into the LSR.

• Phase 2• SENC information is transferred to LSR without

generating input XMLDocument

• System FC is transferred to LSR, not FC XML files

• Updatethe contents of the Host function

S-100WG5, Taunton, UK 3 – 6 March 2020

3.3 Testbed Results

Phase 1

• S-101 ENC was converted to SENC and Input XML was generated using SENC data.

• The S-101 Feature Catalogue file was also entered into the LSR along with Input XML.LSR derived the Drawing Instruction by referring to Lua Rule files.

• Using this result, S-101 ENC marked successfully as shown

S-100WG5, Taunton, UK 3 – 6 March 2020

3.3 Testbed Results

Phase 2

• The SENC delivered the information directly to the LSR, without generating the Input XML Document.

• Feature Catalogue also delivered FC data from System FC not XML files to LSR, to derive the Drawing Instructions in accordance with LSR procedures.

• S-101 ENC display results were the same as Phase 1.

S-100WG5, Taunton, UK 3 – 6 March 2020

Cell Name

(File Size)Round

Using Input XML Case

(ms)

Using SENC Case

(ms) Comparative

processing time

(%)Input XML

Creation Time

Drawing

Instruction

Processing

Time

Total spend

Time

Input XML

Creation Time

Drawing

Instruction

Processing

Time

Total spend Time

101US004NC55M

(70KB)

1 17 104 121 - 81 81 67%

2 15 101 116 - 80 80 69%

3 16 106 122 - 78 78 64%

101kkkkk

(484KB)

1 103 311 414 - 267 267 64%

2 105 320 425 - 262 262 62%

3 103 301 404 - 272 272 67%

101KR004G3E00

(1176KB)

1 282 739 1,021 - 553 553 54%

2 278 730 1,008 - 554 554 55%

3 279 735 1,014 - 571 571 56%

101KR004G3B30

(1764KB)

1 361 1265 1,626 - 953 953 59%

2 363 1272 1,635 - 991 991 61%

3 360 1258 1,618 - 933 933 58%

101KR004G3E20

(2945KB)

1 776 2254 3,030 - 1511 1,511 50%

2 762 2351 3,113 - 1493 1,493 48%

3 771 2226 2,997 - 1517 1,517 51%

Total Average 59%

3.3 Testbed Results

• S-101 Viewer representation with Phase 1 and Phase 2 were the same, but there was a difference in processing time.

• Compared to Phase 1 method, Phase 2 method has about 41% improvement in processing speed.

S-100WG5, Taunton, UK 3 – 6 March 2020

3.3 Testbed Results

• Error in S-101 Lua Rules• The result of displaying of KR1F0000

according to the Lua based S-101 PC, confirming that Depth Area near the coastline is greyed out.

• Depth Area is grayed out as the default background color of the KHOA S-100 Viewer. During the processing Lua rules, an error occurred in Depth area and that area was not displayed.

S-100WG5, Taunton, UK 3 – 6 March 2020

3.3 Testbed Results

• Among Lua files, SEABED01.lua uses a real type value, and the real type value is defined as a table type in the Lua Rules.

S-100WG5, Taunton, UK 3 – 6 March 2020

3.3 Testbed Results

• Below is part of the DEPARE03.lua.

• If DepRangeMinimumValue of DepthArea is not found, -1.0 is assigned to DepthRangeMinimumValue to call SEABED01Function in Lua Rules.But -1.0 is the real type value not table type value, so an error occurred when comparing the table type and real type in SEABED01.lua.

S-100WG5, Taunton, UK 3 – 6 March 2020

3.3 Testbed Results

• It is judged that the above errors are not caused by clarifying the handling of undefined / unknown.

• It is necessary to clarify the handling of undefined/unknown within Lua.

• It is necessary to take the following form:

S-100WG5, Taunton, UK 3 – 6 March 2020

4. Conclusions and Recommendations

• In relation to the provision of LuaScriptingReference C++ Code provided by the NIWC for the C++ based SW development team, the KHOA team focused on applying LSR to the KHOA S-100 Viewer.

• In order to check LSR applicability, we divided it into Phase 1 and Phase 2. Input XML and Feature Catalogue are delivered based on KHOA S-100 Viewer's data structure. We checked 41% improvement over Phase 1 method in Phase 2.

• NIWC was grateful for providing LSR, allowing the KHOA team to apply Lua-based S-101 PC to the KHOA S-100 Viewer.

• LSR may need to be updated as the S-101 PC changes, and the IHO also needs to check whether LSR needs to be maintained continuously.